I have a Steyr S9, have owned a G19, and currently own the .40 cal Glock series (22, 23, 24, 27, 35). IMO the Steyr is a better pistol. I like the trigger better. It is a stronger pistol as it was originally designed as a .45 ACP, BUT that makes the slide much wider than it needs to be for a 9mm. As a result the Steyr is thicker and harder to carry in an IWB holster. As another poster mentioned, there are pre-ban mags available for the G19 and not for the Steyr, so for me I would choose the G19 over a Steyr M9. There was a problem with the first Steyr M9 pistols in that an attempt was made to make the trigger 'litigation proof'. That created a rough 8 lb pull. Enought complaints and it was put where it was suppose to be and the problem was corrected.